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  1. 1

    Enchanting adventure in Agusan Marsh por Tupas, Jeffrey

    Publicado no Philippine Daily Inquirer (2010)
    Artigo

    Enchanting adventure in Agusan Marsh
  2. 2

    Agusan River estuary development potential por Alcala, Angel

    Publicado no Malaya (2008)
    Artigo

    Agusan River estuary development potential
  3. 3

    Toxic mercury pollutes Agusan River por Fernandez, Rudy A.

    Publicado no Philippine Star (2004)
    Artigo

    Toxic mercury pollutes Agusan River

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